. The table below gives physical properties for three types of fibers used to re
ID: 1858348 • Letter: #
Question
. The table below gives physical properties for three types of fibers used to reinforce polymer resins to make PMC materials.
FIBER TYPE>>
CARBON
ARAMID
E-GLASS
Modulus of Elasticity- MSI
33
18
10.5
Tensile Strength- KSI
580
400
500
Specific Modulus of Elasticity- MSI
18.3
12.5
4.1
Specific Tensile Strength- KSI
322
278
197
Specific Gravity- g/cc
1.8
1.44
2.54
Relative Cost
High
Moderate
Low
MSI = million lb/in2
KSI = thousand lb/in2
Compare these fibers as the reinforcing material in PMC materials. In what types of applications might you chose each of them, keeping in mind stiffness, strength, density and cost factors? A thorough discussion is expected.
FIBER TYPE>>
CARBON
ARAMID
E-GLASS
Modulus of Elasticity- MSI
33
18
10.5
Tensile Strength- KSI
580
400
500
Specific Modulus of Elasticity- MSI
18.3
12.5
4.1
Specific Tensile Strength- KSI
322
278
197
Specific Gravity- g/cc
1.8
1.44
2.54
Relative Cost
High
Moderate
Low
Explanation / Answer
Carbon ::: it has high modulus of elesticity . low thermal expension coffiecient , exibit high resistace
Aramid ::: it is a very tough material , it provides benifit when used as a stregtheing material for special application . due to high cost aramid can be replaced by glass or carbon
E- glass ::: it has low durability , so it has high reduction factor
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